This Electric Convection High Temperature Blower Heater from Qmark is perfect choice for convenient and safe heat on the job site. Model SDH4893 provides 163776 BTU output. This High Temperature Electric Blower Heater gives comfort heating and fan-only operation for air recirculation or fresh air supply. It comes with 120V control transformer, over temperature protection and wire box that allows for derating kW output. Over temperature limit protects unit from low air flow conditions. This electric heater comes in Red powder coated finish and uses 600 volt.